﻿#region Copyright information
// 
// Copyright © 2005-2013 Yongkee Cho. All rights reserved.
// 
// This code is a part of the Biological Object Library and governed under the terms of the
// GNU Lesser General  Public License (LGPL) version 2.1 which accompanies this distribution.
// For more information on the LGPL, please visit http://bol.codeplex.com/license.
// 
// - Filename: SetEquals.cs
// - Author: Yongkee Cho
// - Email: yongkeecho@gmail.com
// - Date Created: 2012-11-27 9:18 AM
// - Last Modified: 2013-01-25 3:59 PM
// 
#endregion
using System.Collections.Generic;
using System.Linq;

namespace BOL.Linq
{
    public static partial class Linq
    {
        public static bool SetEquals<TSource>(this IEnumerable<TSource> first, IEnumerable<TSource> second)
        {
            var firstList = first as IList<TSource> ?? first.ToList();
            var secondList = second as IList<TSource> ?? second.ToList();

            return firstList.Count == secondList.Count && firstList.All(secondList.Contains);
        }
    }
}
